[DNSB]

You can enable telnet using NickelMenu. Note that the user/password is admin/admin since root now has a password.

Spoiler:

kobo login: admin
Password:
login: can't change directory to '/home/admin'
[root@kobo ~]# cd /home
-sh: cd: can't cd to /home: No such file or directory
[root@kobo ~]# ls
bin         drivers     lib         lost+found  root        tmp
data        etc         libexec     mnt         sbin        usr
dev         fs.md5sum   linuxrc     proc        sys         var
[root@kobo ~]# iwconfig
ifb0      no wireless extensions.

tunl0     no wireless extensions.

sit0      no wireless extensions.

ifb1      no wireless extensions.

wlan0     IEEE 802.11abgn  ESSID:"HeronBreath"
          Mode:Managed  Frequency:5.22 GHz  Access Point: AC:DB:48:5B:62:4B
          Bit Rate:390 Mb/s   Tx-Power=off
          RTS thr=0 B   Fragment thr:off
          Encryption key:<too big>
          Power Management:off
          Link Quality=0/100  Signal level=-40 dBm  Noise level=0 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

lo        no wireless extensions.

[root@kobo ~]#

The option in NickelMenu is:

menu_item : main    : Telnet             : cmd_spawn      : quiet: /bin/mount -t devpts | /bin/grep -q /dev/pts || { /bin/mkdir -p /dev/pts && /bin/mount -t devpts devpts /dev/pts; }
      chain_success  : cmd_spawn          : quiet: /usr/bin/pkill -f "^/usr/bin/tcpsvd -E 0.0.0.0 1023" || true && exec /usr/bin/tcpsvd -E 0.0.0.0 1023 /usr/sbin/telnetd -i -l /bin/login
      chain_success  : dbg_toast          : Started Telnet server on port 1023.